onto day one of president obama's second term. He and the first lady surprised visitors at the white house today. Talk about high level tour guards. There they were. No one could believe their eyes. But as we know, yesterday, the president said he has big changes planned for the next four years. The question becomes, exactly what is he going to do? And abc's chief white house correspondent jonathan karl spent the day I i ttrying to find out. Reporter: After the obamas left the big inaugural ball, they returned to the white house for a star-studded after hours party. Celebrities posted photos well after midnight. But today, it's back to reality. President obama's inaugural speech outlined a boldly liberal vision that congressional republicans declared dead on arrival. Unabashedly far left of center inauguration speech. Obviously, it's not designed to bring us together. Reporter: Now that the actually going to do? He dedicated more of the speech to climate change than any other one issue. We will respond to the threat of climate change, knowing that the failure to do so would betray our children and future generations. Reporter: That came as a surprise. During the campaign, the president spent more time touting the very fossil fuels that contribute to global warming. Too much oil. That's a good problem to have. Reporter: We tried to press the white house today on what the president's going to do now that he has made climate change a top priority. What specifically does he want to do that he didn't do in the first term? Well, I think the president will move forward in implementing some of the actions that he took in the first term. Reporter: Did he run a single ad during the entire campaign that invoked climate change? I can't remember, but it was certainly an issue that he talked about frequently on the campaign trail. Reporter: We checked. The campaign ran more than 460,000 ads, not a single one mentioned climate change. White house officials acknowledge there aren't the votes in congress for a big climate change bill -- even from moderate democrats concerned it would drive up the price of oil and gas. That's why on this issue, the president's first move won't be in congress. Supporters like you will be the heart of this organization. Reporter: With an assist from the first lady, he's launching his new advocacy group -- organizing for action -- to build public support and pressure to get votes in congress that just aren't there right now. The president's new advocacy group will operate like a campaign, running tv ads and sending volunteers to knock on doors, promoting the president's agenda. In terms of the specifics of that agenda, the white house says that will come three weeks from tonight, diane, when the president delivers his state of the union address. Jonathan karl, thank you. And as you know, there was

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